Top Drive, Ibop, Whashpipe manufacturer / supplier in China, offering 350 Ton Top Drive System (TDS) 800kw Power with VFD Control House and Service Loop for 5000 M Drilling Rig, New Designed Top Drive with 350 Ton Load and 800kw Motor for 5000 M Oil Well Drilling, Model Dq50-Bq 350 Ton Top Drive Complete with VFD House and Service Loop for 5000m Well Drilling and so on.